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Greetings to everyone, this is my first post and my first build. Iīm an American living in Spain. I have built a 5F2-A using Steve Milbergerīs schematic and layout. I made an error when I wired up the PT basically applying 220v to a 110 wired circuit. PT died on the spot. I obtained a new one and wired it correctly and the amp now amplifies but there is unpleasant distortion and a weird sci-fi sounding out-of-tune harmony accompanying the notes. I fear I have damaged some components with excessive voltage. Can anyone advise me on how to proceed?
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Wow... With that set up, it could be a lot of things. I'll bet there's a mistake in the wiring. But it could also be bad filter caps. If the high voltage damaged your filters you would have a second oscillating note riding on top of the basic tone. You would also have excessive hum.
Chuck"Take two placebos, works twice as well." Enzo
"Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas
"If you're not interested in opinions and the experience of others, why even start a thread?
You can't just expect consent." Helmholtz -
Could have blown the OT too, pull the power tube and measure ohms from 6V6 pin 3 to hot terminal of first filter cap after the rectifier.Comment
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pin three ohms
Thanks for your reply. Pin three to the first filter cap reads 220 ohms. I donīt know how to test the caps but I have ordered new tubes and caps.Comment
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220ohms seems about ball park, OT should be OK.Comment
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Next step
So my plan from here is double check all wiring, swap out tubes, and replace filter caps. Any other suggestions?Comment
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